Jolt-roll-over mechanism



May 3 1927.

F. A. SEEMAN 348 JOLT-ROLL- OVER MECHANISM I Filed March 2, 1925 5 Sheds-Sheet l 4 FREbERI cK ASEEMAN v INVENTOR.

ATTORNEY 3 19' 7 May 27 F. A. SEEMAN- JOLT-ROLL-OVER MECHANISM Filed March 2. 1925 3 Sheets'-Sheet 2 A. fi qq bpoocc o FR DERICK A 5EEMA N.

INI/ENTOR ATTORAEY.

1927 F. A. SEEMAN JOLT- ROLL- OVER MECHANISM 3 Sheets-Sheet 3 Filed March 2, 1925 FRggER/CK MW/MW).

ATTORNEY.

Patented May 3, 1927.

UNITED-STATES PATENTDEHCB Err-Enamel: a sen-Man, or DAVENPO T; owa assre qoa-ro nAvnNroR'r MACHINE a moon- RY eourmw, or DAVENPORT, Iowa, A oonroaa'rron OF'IOWA.

.aoL'r-noLL-ov n MECHANISM.

applica i n am Marc .2, 92.15. s nate- .12-

B a ly my nv a i t lat s to ana 1 for removing sand, ,dust and other particles from a surface upon which a heayyarticle' is to he placed in ,order to prevent marrmg of the surfaces which come into contact. More specifically, myinvention relates to the removing of particles from the olt table of a jolt-rollover machine in order to prevent wear of the surfaces which come nto n act. wh the mol placed rea the jolt table. Among the objects of this nventionam :to provide means for remov ng sand and otlier particles from the j olt, ta lol'ej'; to provide automatic means for accomplish l ing the desiredrasurlts, vsaid,meanfs being actuated Joy .the operation :of the machine; to provide means which will dlrect a blast of compressed gas upon the jolt table during the operation of the roll-over mechanism so that sand, dust and like particles shall be automatically removed from the table; and such further objects, advantages and capabilities as will hereafter more fully appear, and as are inherent in the structure as herein disclosed. My invention further resides in the combination, construction and arrangement of parts illustrated in the accompanying drawings, and, while I have shown therein a preferred embodiment and a modification thereof, I desire the same to be understood as illustrative only-and not as limiting my invention.

In the accompanying drawing, Fig. 1 is a plan view of a jolt-roll-over machine having my invention applied thereto; Fig. 2 is a side elevation of a portion of the structure shown in Fig. 1; Fig. 3 is a plan View of a part of the mechanism shown in Figs. 1 and 2, the same being detached from the rest of the mechanism; Fig. 4 is a fragmentary elevation of the structure shown in Fig. 3 and taken from the left side of said figure;

and Fig. 5 is a fragmentary view similar to Fig. 2 but showing another mode of carrying out my invention.

Referring more in detail to the annexed drawings, numeral 1 designates the rollover mechanism generally and 2 the jolt table, upon which the flask and mold are to to remove from the table before placing the be placed during the operation of the ma-- fiask' thereon, so'that a. grinding action will not take place and cause a roughening or the surfaces in contact. In order toaccomplish this function I have provided a pipe {lYhaviiig a series of perforatio ns 5along one face thereof directed toward the table top so that compressed airor the like forced therethroi lgh will blow off all sand and other particles on the surface of the table. The fluid under pressure is furnished to'the pipe l by means of a" 3e 6 which is" connected to a source of pressure. Different types of valves 7 and 8 are shown in 3 5, respectively, These valves are auto natica'll actuated during theoperationfof the ro l-over mechanism. In the construction shown in Figs. 1, 2' and 3'the valve 7 is actuated by an arm 9 which strikes the arm 10 of the valve as the rollover cylinder 11 moves either to the right or left, as shown in Fig. 2. The arm 9 is carried by a bracket 12 mounted on the head of the cylinder 11 but any other suitable means for actuating the valve may be resorted to. The valve 7 is automatically closed by spring means 13, as soon as the arm 9 has passed the point where it holds the valve open. It will thus be seen that the valve is momentarily opened shortly before the flask is placed on the table and 5 again shortly after the flask is removed therefrom, directing two blasts of compressed air or thelike. upon the table top,

insuring the removal of all particles therefrom. g

In the form of my invention shown in Fig. 5 the valve 8 has a stem 15 projecting toward the axle of the roll-over frame. Mounted upon this axle is a cam plate carrying a freely rotating roller 16 which engages the end of stem 15 or a projection 17 on the pivoted arm 18 carried by the casing of the valve 8. It will thus be seen that this mechanism will function in the same manner as that described above, causingtwo jets of air to pass over the face of the jolt table during a singleoperation of the machine.

It is of course understood that the specific description of the structure set forth above may be departed from without departing from the spirit of my invention as set forth in this specification and the appended claims.

1Having now described my invention, 1 c aim:

1. In a mechanism, of the character described, a jolt table, roll-over mechanism, a perforated pipe arranged substantially at the level of the table top, the perforations being directed toward the upper surface of the table, means for supplying a fluid under pressure to the perforated pipe, means for controlling the flow of fluid through the pipe and means connected with the roll-over mechanism for automatically actuating the control means during the functioning of the apparatus.

2. In combination with a roll-over machine and its table, a pipe adjacent the table for conveying a gas under pressure, said pipe having perforations therein, directed toward the table, means for conveying the gas to said pipe and means for admitting and cutting off the supply of gas thereto, said last mentioned means including a valve in the gas conveying means and a projection from a moving part of the roll-over machine whereby the valve is opened.

3. In a machine of the character described, having a table on which a mold is to be deposited, the combination of a perforated pipe, substantially at the level of the table top with a valve controlled pipe connected thereto and provided with means for automatically closing the valve, said machine having means for automatically opening the valve when the machine is operated, said last named means comprising a cam carried by the roll-over axle and adapted to coact with the valve for the purpose stated.

4. In a mechanism of the character described, a jolt table, roll-over mechanism, a perforated pipe arranged substantially at the level of the table top, the perforations being directed toward the upper surface of the table, means for supplying a fluid under pressure to the perforated pipe, means for controlling the flow of fluid through the pipe and means connected with the roll-over mechanism for automatically actuating the control means during the functioning of the apparatus, comprising a cam carried by the axle of the roll-over mechanism for actuating the fluid control mechanism in one direction.

In witness whereof, I hereunto subscribe my name to this specification.

FREDERICK A. SEEMAN. 

